/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MoviePipelineBlueprintLibrary.h
Get the estimated amount of time remaining for the current pipeline. Based on looking at the total amount of samples to render vs. how many have been completed so far. Inaccurate when Time Dilation is used, and gets more accurate over the course of the render.
True if a valid estimate can be calculated, or false if it is not ready yet (ie: not enough samples rendered)
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="Movie Render Pipeline") static bool GetEstimatedTimeRemaining ( const [UMoviePipeline](API\Plugins\MovieRenderPipelineCore\UMoviePipeline) * InPipeline, [FTimespan](API\Runtime\Core\Misc\FTimespan) & OutEstimate )